Problem with configuring hmailServer

I am writing a program using java to send e mail. I notice that, the java program executes successfully, but the email is not reaching the intended recipients. I am using hMailServer as my SMTP server.

The server runs on port 25. I have confirmed that the firewall allows this port.

I ran a diagnostic test on the hMailServer and got the following report.

Also, I found that emails got queued in the server.

 Return-Path: <>
Message-ID: <C49CD35F-1204-4E7A-B520-18371344CC5C@localhost>
Date: Tue, 2 Aug 2011 16:50:04 +0530
From: mailer-daemon@localhost
 To: user2@test.com
Subject: Undeliverable: H开发者_如何学JAVAi
 Content-Transfer-Encoding: quoted-printable
  X-hMailServer-LoopCount: 1

Your message did not reach some or all of the intended recipients.

    Sent: Tue, 2 Aug 2011 16:50:01 +0530 (IST)
     Subject: Hi

     The following recipient(s) could not be reached:

      myname@gmail.com
      Error Type: SMTP
      Error Description: No mail servers appear to exists for the 
      recipients address.Additional information: Please check
      that you have not misspelled the recipients  email address.

What might be the issue. Can you help fix this issue?

You are using the domain test.com you want your domain to be local. Try something like test.local